Matt, Antti, Paul and David thanks for the comments.
Indeed High Chaparrall is a good sorce of ideas because it has apaches, mexican rancheros and banditos, white outlaws, cavalry etc.
Paul, if i´m not mistaken the girl is from Eureka.
Do check the Sarissa hacienda for ideas. Also High Chaparral too. The Montoya hacienda might be usefull.